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You may think you're joking, but there is actually a microfab technique based on shrinky-dinks. Pattern some thermoplastic and then cook it to shrink the dimensions. It's more for creating micro-scale forms on the cheap, rather than for these sort of nano-scale silicon features, but the idea isn't totally crazy.

My girlfriend can produce a high-pitched meow that sounds rather kittenish. It's like a harpoon in her cat's brain; he has no choice to come over and investigate, regardless of where he was and what he was doing.

His brain is also kind of like an etch-a-sketch. If he's in a bad mood you can shake his head vigorously and he forgets what was going on.